8. Dog Walker
Do you like animals and find being surrounded by them to be soothing? You could become a dog walker! This is one of the most casual suggestions among our highest-paying part-time or side jobs for retired firefighters. You don’t need any special skills to do this job, and it’s flexible so it will fit perfectly into your lifestyle. You can start by walking the neighbors’ dogs. The average hourly pay rate for a dog walker is $13.52.